Design of miniature double-exponential pulse generator

Xing, 周星 Zhou; Min, 赵敏 Zhao; Erwei, 程二威 Cheng; Qingxi, 杨清熙 Yang

doi:10.3788/hplpb20142606.63202

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Design Of Trigger Circuit1

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2014

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“…In this paper, we use 555 as pulse source to yield a pulse sequence with tunable frequency, since its output signal can't meet above condition, 74LS123 as a reshaping circuit to make the output signal of 555 short(see Fig. 3) [6]. Its delay time is determined by external capacitor and resistance.…”

Section: Design Of Trigger Circuitmentioning

confidence: 99%

Design of Miniature Dual Exponential Pulse Source Using EMC Experiment

Zhao¹,

Zhou²,

Wang³

et al. 2014

AMR

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Based on avalanche effect of avalanche transistor, Marx circuit configuration is adopted, trigger circuit and PCB layout are described in detail. The all-solid-state pulse source is designed with 10-stages Marx circuit. The test results demonstrate that its output impedance is 50Ω, the pulse width is 10ns approximately, pulse voltage is about 1.5kV,the rise time of the positive pulse is less than 2ns, the fall time of negative pulse is about 3ns, the operating frequency is 10kHz, coefficient of variation for voltage peak, fall time and pulse width is less than 5%, which is suitalbe as interference source for the EMC experiment.

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Section: Design Of Trigger Circuitmentioning

confidence: 99%